Question

why dont the plant nutrition labels all show the same food molecules? *

we eat different parts of different plants, and different parts can have different food molecules.

the nutrition labels only focus on the most common food molecules, so the ones that are present in tiny amounts dont show up on the label.

not all plants have or need all three molecules.

Explanation:

Plant-based foods vary because we consume distinct parts (e.g., roots, leaves, fruits) of different plant species, and each plant part has a unique composition of food molecules. This directly causes their nutrition labels to differ. The other options do not address the core reason for the full variation in displayed molecules across different plant food labels.

Answer:

We eat different parts of different plants, and different parts can have different food molecules.